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FASTENERS

FASTENERS. Screws, Nails, Bolts…. SCREWS AND NAILS. Must resist corrosion Rusting fasteners retain moisture Rot Bleed. SCREWS AND NAILS. Galvanized coating Specify “hot-dipped” Avoid electro-galvanized (bright) Stainless steel Polymer-coated. NAILS. Hardened piece of wire

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FASTENERS

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  1. FASTENERS Screws, Nails, Bolts…

  2. SCREWS AND NAILS • Must resist corrosion • Rusting fasteners retain moisture • Rot • Bleed

  3. SCREWS AND NAILS • Galvanizedcoating • Specify “hot-dipped” • Avoid electro-galvanized (bright) • Stainless steel • Polymer-coated

  4. NAILS • Hardened piece of wire • Nail length is given in “Penny Weight” (d) • 10d nail is about 3” long

  5. PENNYWEIGHT? The term penny originated in England many years ago. Ten penny, four penny, etc., nails got their names from the fact that one hundred nails of that size cost ten pence, four pence, etc. Today penny represents the definite length of a nail measured from the head to the tip of the point. The term penny is still shown by using the English Pence sign d.

  6. NAILS Avoid splitting wood • Using pilot holes • Flat side with the grain

  7. NAILS Avoid splitting wood • Stagger nails

  8. NAILS Avoid splitting wood • Blunt tips

  9. NAILS TYPES • Smooth shank • Ring shank • Spiral shank • Truss nail • Duplex nail (temporary)

  10. NAILS TYPES

  11. SCREWS • Greater resistance to withdrawal than nails • Specify size by diameter and length • ¼” x 3” • ½” x 6”

  12. PILOT HOLE for SCREWS • Pilot hole should be smaller than screw • Thread bites into wood • Size of shank

  13. SCREWS TYPES Wood Screws • Standard • Phillips • Square drive • Star (torx) drive

  14. Screws • Phillips/Square/Slotted combo head

  15. SCREWS TYPES Sheet metal screws • Tip acts like a drill bit

  16. SCREWS TYPES Lag Screws • Heavy duty screw used when bolts cannot • 2 to 8” long

  17. Lag Screws Installation • Drill about half the length of lag screw • Hammer to bottom of pilot hole • Thread the rest of way

  18. LedgerLOK screws https://www.youtube.com/watch?v=_U1HwgttA5Y&index=7&list=PLA1B52C642BD82167

  19. BOLTS • Better shear strength than nails and screws • Used in major structural joints • Size: diameter and length • Sizing length: 1” greater than the adjoining boards

  20. PILOT HOLE for BOLTS • Pilot hole same size as bolt • Thread bite not required • Washers and nut required to fasten

  21. BOLT TYPES Standard Bolt • Hex or square head

  22. BOLT TYPES Carriage bolt • Round head with square base for better look and feel • Tighten until square base crunches in

  23. ThruLOK bolts • http://www.youtube.com/watch?v=ApIDd39LUGc

  24. BOLT TYPES Expanding or wedge bolt • Attaching to concrete or brick • Flange fits into pre-drilled hole

  25. Wedge Bolt Installation • Drill depth of bolt with concrete bit • Hammer bolt to bottom of pilot hole • Avoid flattening threads • Tighten nut and washer

  26. IPE Clips

  27. IPE Clips • https://www.youtube.com/watch?v=vJsfpp0gt8M

  28. JOINING MATERIALS Direct nailing: 1” from end and side

  29. JOINING MATERIALS • Toenailing: 45-degree through end of board

  30. JOINING MATERIALS • Butt joint: two boards simply butted together

  31. JOINING MATERIALS • Miter cut: angle cut across width • Miter joint: 90-degree corner

  32. JOINING MATERIALS • Bevel cut: angle cut along thickness

  33. JOINING MATERIALS • Cross cut: cutting across the grain at 90-degree

  34. JOINING MATERIALS • Rip cut: cutting with the grain

  35. Table saw for rip cuts • Table saw sensor • https://www.youtube.com/watch?v=No_h6iVIFgA

  36. JOINING MATERIALS • Splicing: overlap or gusset over beam

  37. CONNECTORS Joist hanger: connecting joist to ledger

  38. CONNECTORS • Post saddle: fastening beam to top of post

  39. CONNECTORS • Angle bracket: support under wood (steps)

  40. CONNECTORS Rafter ties: connect joist to beam

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